b43: Add N-PHY register definitions

This patch adds all register definitions for the N-PHY.
This adds two new files: nphy.h and nphy.c
No functional changes to existing code.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/Makefile

 b43-y				+= main.o
 b43-y				+= tables.o
 b43-y				+= phy.o
+b43-y				+= nphy.o
 b43-y				+= sysfs.o
 b43-y				+= xmit.o
 b43-y				+= lo.o

drivers/net/wireless/b43/nphy.c

+/*
+
+  Broadcom B43 wireless driver
+  IEEE 802.11n PHY support
+
+  Copyright (c) 2008 Michael Buesch <mb@bu3sch.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+#include "nphy.h"
+
+
+int b43_phy_initn(struct b43_wldev *dev)
+{
+	b43err(dev->wl, "IEEE 802.11n devices are not supported, yet.\n");
+
+	return -EOPNOTSUPP;
+}

drivers/net/wireless/b43/phy.c

@@ -31,6 +31,7 @@
 
 #include "b43.h"
 #include "phy.h"
+#include "nphy.h"
 #include "main.h"
 #include "tables.h"
 #include "lo.h"
@@ -1974,41 +1975,44 @@ int b43_phy_init_tssi2dbm_table(struct b43_wldev *dev)
 int b43_phy_init(struct b43_wldev *dev)
 {
 	struct b43_phy *phy = &dev->phy;
-	int err = -ENODEV;
+	bool unsupported = 0;
+	int err = 0;
 
 	switch (phy->type) {
 	case B43_PHYTYPE_A:
-		if (phy->rev == 2 || phy->rev == 3) {
+		if (phy->rev == 2 || phy->rev == 3)
 			b43_phy_inita(dev);
-			err = 0;
-		}
+		else
+			unsupported = 1;
 		break;
 	case B43_PHYTYPE_B:
 		switch (phy->rev) {
 		case 2:
 			b43_phy_initb2(dev);
-			err = 0;
 			break;
 		case 4:
 			b43_phy_initb4(dev);
-			err = 0;
 			break;
 		case 5:
 			b43_phy_initb5(dev);
-			err = 0;
 			break;
 		case 6:
 			b43_phy_initb6(dev);
-			err = 0;
 			break;
+		default:
+			unsupported = 1;
 		}
 		break;
 	case B43_PHYTYPE_G:
 		b43_phy_initg(dev);
-		err = 0;
 		break;
+	case B43_PHYTYPE_N:
+		err = b43_phy_initn(dev);
+		break;
+	default:
+		unsupported = 1;
 	}
-	if (err)
+	if (unsupported)
 		b43err(dev->wl, "Unknown PHYTYPE found\n");
 
 	return err;

drivers/net/wireless/b43/phy.h

@@ -9,11 +9,14 @@ struct b43_phy;
 /*** PHY Registers ***/
 
 /* Routing */
-#define B43_PHYROUTE_OFDM_GPHY		0x400
-#define B43_PHYROUTE_EXT_GPHY		0x800
+#define B43_PHYROUTE_OFDM_GPHY		0x0400 /* OFDM register routing for G-PHYs */
+#define B43_PHYROUTE_EXT_GPHY		0x0800 /* Extended G-PHY registers */
+#define B43_PHYROUTE_N_BMODE		0x3000 /* N-PHY BMODE registers */
 
 /* Base registers. */
 #define B43_PHY_BASE(reg)		(reg)
+/* N-PHY registers. */
+#define B43_PHY_N(reg)			(reg)
 /* OFDM (A) registers of a G-PHY */
 #define B43_PHY_OFDM(reg)		((reg) | B43_PHYROUTE_OFDM_GPHY)
 /* Extended G-PHY registers */